199987990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{3797}}^1$

素因数の和:4056

約数の個数: 32

約数和(自身を含む): 377369280

約数和(自身を除く): 177381290

約数列:

[1, 2, 5, 10, 23, 46, 115, 229, 230, 458, 1145, 2290, 3797, 5267, 7594, 10534, 18985, 26335, 37970, 52670, 87331, 174662, 436655, 869513, 873310, 1739026, 4347565, 8695130, 19998799, 39997598, 99993995, 199987990]

約数ペア:

[(1, 199987990), (2, 99993995), (5, 39997598), (10, 19998799), (23, 8695130), (46, 4347565), (115, 1739026), (229, 873310), (230, 869513), (458, 436655), (1145, 174662), (2290, 87331), (3797, 52670), (5267, 37970), (7594, 26335), (10534, 18985)]